>>>But, Robert, I also need to use VFP 7 for an existing client. <<
>Why?
>

Because they provide an application to a production client base of a few dozen users. They are all swamped, having lost staff over the past year. They have no desire, now, to start recompiling and upgrading: no matter how many assurances you want to give them, they simply will not do so without a few weeks of regression testing. And, frankly, I don't blame them one bit. They have a responsibility to their clients to keep things up and running, they want to be known as a robust software, and their QA head has some very stringent guidelines about what goes out the door.

As for your other point, the use of both products is possible, but, frankly, extremely time-consuming (reinstalls and uninstalls, etc.)

Based on this, I will not be upgrading. This does not, in my book, make me an idiot. It is a business decision, and a valid one.